Proton mobility in Ruddlesden−Popper phase H2La2Ti3O10 studied by 1H NMR

Marina Shelyapina, Denis Nefedov, Artem Kostromin, Oleg Silyukov, Irina Zvereva

Результат исследований: Научные публикации в периодических изданияхстатьярецензирование

6 Цитирования (Scopus)


To study protons localization in H 1.83 K 0.17 La 2 Ti 3 O 10 ·0.17H 2 O and their motional characteristics, complementary Nuclear Magnetic Resonance (NMR) techniques have been applied. 1 H Magic Angle Spinning NMR evidences the presence of different proton containing species. By analyzing the temperature dependence of the 1 H MAS NMR spectrum we attribute the observed lines to interlayer H + in regular sites (isolated and in water rich environment), water protons and protons from various defects. The temperature behaviors of the spectral lines intensities and widths point out that intercalated water molecules are involved in translational motion that is confirmed by spin lattice relaxation rate (R 1 ) and spin-lattice relaxation rate in rotating frame (R ) measurements. It has been shown that for a correct determination of the proton motional parameters the Kohlrausch-Williams-Watts correlation function must be used. Its application results in the following parameters of proton motion in the interlayer space of H 1.83 K 0.17 La 2 Ti 3 O 10 ·0.17H 2 O: E a = 0.194(2) eV, β = 0.28(1), τ 0 =6.2(1)×10 −10 s.

Язык оригиналаанглийский
Страницы (с-по)5788-5795
Число страниц8
ЖурналCeramics International
Номер выпуска5
Ранняя дата в режиме онлайн7 дек 2018
СостояниеОпубликовано - 2019

Предметные области Scopus

  • Физика и астрономия (все)
  • Химия (все)
  • Электроника, оптика и магнитные материалы
  • Керамика и композитные материалы
  • Химия материалов
  • Поверхности, слои и пленки
  • Химия и технология процессов


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